Numerical and Experimental Evaluation of Shine-Through Loss and Beam Heating Due to Neutral Beam Injection on EAST
Jinfang Wang, Yingying Li, Bin Wu, Yuqing Chen, Li Jun, Yongjian Xu, Long-Xi Chen, Baolong Hao, Deng Zhou, Juan Huang, Si-Ye Ding, Zhen Yang, Y. W. Hou, Xiaojuan Liu, Nong Xiang
Abstract
This research applies experimental measurements and NUBEAM, ONETWO and TRANSP modules to investigate the shine-through (ST) loss ratio and beam heating percentage of neutral beam injection on EAST. Measurements and simulations confirm that the ST loss ratio increases linearly with beam energy, and decreases exponentially with plasma density. Moreover, using the multi-step fitting method, we present analytical quantitative expressions of ST loss ratio and beam heating percentage, which are valuable for the high parameter long-pulse experiments of EAST.
Topics & Concepts
Beam (structure)Materials sciencePlasmaNeutral beam injectionAtomic physicsBeam energyComputational physicsOpticsPhysicsNuclear physicsTokamakMagnetic confinement fusion researchParticle accelerators and beam dynamicsLaser-Plasma Interactions and Diagnostics